Protester Susann Doveikis-West hugs a Chicago Police Officer during a protest in front of President Barack Obama's campaign headquarters during NATO Summit in Chicago, Illinois, on Monday, May 21, 2012.

Protester Susann Doveikis-West hugs a Chicago Police Officer during a protest in front of President Barack Obama's campaign headquarters during NATO Summit in Chicago, Illinois, on Monday, May 21, 2012.

Alex Kennedy, left, from Geneva, Ill., and Dillon Roberts, from Bartlett, Ill., kiss after a demonstration and march to President Barack Obama's campaign headquarters in Chicago on Monday, May 21, 2012, the final day of the NATO summit. (AP Photo/Charles Rex Arbogast) less

Alex Kennedy, left, from Geneva, Ill., and Dillon Roberts, from Bartlett, Ill., kiss after a demonstration and march to President Barack Obama's campaign headquarters in Chicago on Monday, May 21, 2012, the ... more

After walking a block over from her residence, Danielle Karpinos holds her daughter Aria, 7 months, while standing with riot police as a NATO protest march heads south on Michigan Avenue in Chicago, Illinois, on Sunday, May 20, 2012. less

After walking a block over from her residence, Danielle Karpinos holds her daughter Aria, 7 months, while standing with riot police as a NATO protest march heads south on Michigan Avenue in Chicago, Illinois, ... more

Photo: Scott Strazzante, McClatchy-Tribune News Service

After walking a block over from her residence, Danielle Karpinos... Photo-2962032.43024 - Houston Chronicle

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A protester is helped after sustaining an injury at a protest march and rally during this weekend's NATO summit in Chicago Sunday, May 20, 2012 in Chicago. (AP Photo/Charles Rex Arbogast)

A protester is helped after sustaining an injury at a protest march and rally during this weekend's NATO summit in Chicago Sunday, May 20, 2012 in Chicago. (AP Photo/Charles Rex Arbogast)

Photo: Charles Rex Arbogast, Associated Press

A protester is helped after sustaining an injury at a protest march... Photo-2962027.43024 - Houston Chronicle

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Demonstrators flow out of Grant Park in Chicago during this weekend's NATO summit Sunday, May 20, 2012 in Chicago.

Demonstrators flow out of Grant Park in Chicago during this weekend's NATO summit Sunday, May 20, 2012 in Chicago.

Jesse Jackson joins other protesters, including a group of veterans against the wars in Iraq and Afghanistan, on the first day of the NATO summit on May 20, 2012 in Chicago, Illinois. Sixty heads of state, 2,500 journalists and thousands of protesters have converged on Chicago for the two day NATO meeting which begins on Sunday and will look to address the situation in Afghanistan among other global defense issues. Chicago police are preparing for the worst with many officers in riot gear and with their numbers enhanced by police from outside the city. less

Jesse Jackson joins other protesters, including a group of veterans against the wars in Iraq and Afghanistan, on the first day of the NATO summit on May 20, 2012 in Chicago, Illinois. Sixty heads of state, ... more

Photo: Spencer Platt, Getty Images

Jesse Jackson joins other protesters, including a group of veterans... Photo-2962033.43024 - Houston Chronicle

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The Black Bloc anarchist protestors try to make a run for it, pushing south through the crowd on Wabash during the NATO Summit in Chicago, Illinois, on Sunday, May 20, 2012. (Chris Walker/Chicago Tribune/MCT)

The Black Bloc anarchist protestors try to make a run for it, pushing south through the crowd on Wabash during the NATO Summit in Chicago, Illinois, on Sunday, May 20, 2012. (Chris Walker/Chicago Tribune/MCT)

Photo: Chris Walker, McClatchy-Tribune News Service

The Black Bloc anarchist protestors try to make a run for it,... Photo-2962029.43024 - Houston Chronicle

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A protester screams against the actions of NATO while marching down Michigan Avenue in Chicago on May 20, 2012. Thousands of NATO protesters demanding an end to costly and destructive wars marched in Chicago where the leaders of more than 50 nations were discussing the withdrawal from Afghanistan. less

A protester screams against the actions of NATO while marching down Michigan Avenue in Chicago on May 20, 2012. Thousands of NATO protesters demanding an end to costly and destructive wars marched in Chicago ... more

Photo: CENGIZ YAR, AFP/Getty Images

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Activists march through Chicago's financial district, protesting foreclosures and evictions Wednesday, May 16, 2012. Dozens took part in the march, one of the many leading up to this weekend's NATO summit where delegations from about 60 countries, including 50 heads of state, are expected to attend. The march ended without any arrests. (AP Photo/M. Spencer Green) less

Activists march through Chicago's financial district, protesting foreclosures and evictions Wednesday, May 16, 2012. Dozens took part in the march, one of the many leading up to this weekend's NATO summit where ... more

Activists remove a chair after setting up a pseudo home outside a branch of Citibank Wednesday, May 16, 2012, in Chicago during a protest against foreclosures and evictions. Dozens took part in the protest, one of the many leading up to this weekend's NATO summit where delegations from about 60 countries, including 50 heads of state, are expected to attend. The protest ended without any arrests.(AP Photo/M. Spencer Green) less

Activists remove a chair after setting up a pseudo home outside a branch of Citibank Wednesday, May 16, 2012, in Chicago during a protest against foreclosures and evictions. Dozens took part in the protest, ... more

Photo: M. Spencer Green, Associated Press

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Loren Taylor pretends to set up house outside a branch of Citibank Wednesday, May 16, 2012, in Chicago during a protest by activists against foreclosures and evictions. Dozens took part in the protest, one of the many leading up to this weekend's NATO summit where delegations from about 60 countries, including 50 heads of state, are expected to attend. The protest ended without any arrests. (AP Photo/M. Spencer Green) less

Loren Taylor pretends to set up house outside a branch of Citibank Wednesday, May 16, 2012, in Chicago during a protest by activists against foreclosures and evictions. Dozens took part in the protest, one of ... more

Photo: M. Spencer Green, Associated Press

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Activists walk past the county building, Wednesday, May 16, 2012, in Chicago during a rally and march protesting foreclosures and evictions. Dozens took part in the protest, one of the many leading up to this weekend's NATO summit where delegations from about 60 countries, including 50 heads of state, are expected to attend. The protest ended without any arrests. (AP Photo/M. Spencer Green) less

Activists walk past the county building, Wednesday, May 16, 2012, in Chicago during a rally and march protesting foreclosures and evictions. Dozens took part in the protest, one of the many leading up to this ... more

Police officers take Rev. Jose Landaverde and Emma Lozano into custody outside the entrance to the federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests planned in the days leading up to the NATO summit. The gathering of heads of state begins this weekend.(AP Photo/Kiichiro Sato) less

Police officers take Rev. Jose Landaverde and Emma Lozano into custody outside the entrance to the federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many ... more

Occupy Chicago demonstrators take off into downtown streets, trying to block traffic following a march at the Federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests planned in the days leading up to the NATO summit. The gathering of heads of state begins this weekend. (AP Photo/Kiichiro Sato) less

Occupy Chicago demonstrators take off into downtown streets, trying to block traffic following a march at the Federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one ... more

Occupy Chicago demonstrators take off into downtown streets, trying to block traffic following a march at the Federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests planned in the days leading up to the NATO summit. The gathering of heads of state begins this weekend.(AP Photo/Kiichiro Sato) less

Occupy Chicago demonstrators take off into downtown streets, trying to block traffic following a march at the Federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one ... more

Crystal Vance Guerra, from right, Emma Lozano and Rev. Jose Landaverde sit in front of the entrance to the federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Lozano and Landaverde were later handcuffed and taken to custody. Dozens picketed Tuesday, one of many protests planned in the days leading up to the NATO summit. The gathering of heads of state begins this weekend.(AP Photo/Kiichiro Sato) less

Crystal Vance Guerra, from right, Emma Lozano and Rev. Jose Landaverde sit in front of the entrance to the federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Lozano and Landaverde were later ... more

Chicago police officers take a protester into custody, as Occupy Chicago demonstrators took off into downtown streets, trying to block traffic following a march at the federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests planned in the days leading up to the NATO summit. The gathering of heads of state begins this weekend.(AP Photo/Kiichiro Sato) less

Chicago police officers take a protester into custody, as Occupy Chicago demonstrators took off into downtown streets, trying to block traffic following a march at the federal Immigration Court building ... more

Chicago police officers take a protester into custody, as Occupy Chicago demonstrators took off into downtown streets, trying to block traffic following a march at the federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests planned in the days leading up to the NATO summit. The gathering of heads of state begins this weekend.(AP Photo/Kiichiro Sato) less

Chicago police officers take a protester into custody, as Occupy Chicago demonstrators took off into downtown streets, trying to block traffic following a march at the federal Immigration Court building ... more

Protesters chant during a demonstration outside the federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests planned in the days leading up to the NATO summit. The gathering of heads of state begins this weekend.(AP Photo/Kiichiro Sato) less

Protesters chant during a demonstration outside the federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests planned in the days leading up to the NATO ... more

A protester yells at a Chicago police officer during a demonstration outside the federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests planned in the days leading up to the NATO summit. The gathering of heads of state begins this weekend.(AP Photo/Kiichiro Sato) less

A protester yells at a Chicago police officer during a demonstration outside the federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests planned in ... more

Chicago police officers take a protester into custody, as Occupy Chicago demonstrators took off into downtown streets, trying to block traffic following a march at the federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests planned in the days leading up to the NATO summit. The gathering of heads of state begins this weekend.(AP Photo/Kiichiro Sato) less

Chicago police officers take a protester into custody, as Occupy Chicago demonstrators took off into downtown streets, trying to block traffic following a march at the federal Immigration Court building ... more

A Chicago police officer takes a protester into custody during a demonstration outside the federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests planned in the days leading up to the NATO summit. The gathering of heads of state begins this weekend.(AP Photo/Kiichiro Sato) less

A Chicago police officer takes a protester into custody during a demonstration outside the federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests ... more

Protesters gather in front of a federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests planned in the days leading up to the NATO summit. The gathering of heads of state begins this weekend.(AP Photo/Kiichiro Sato) less

Protesters gather in front of a federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests planned in the days leading up to the NATO summit. The ... more

Rev. Jose Landaverde, center, and Emma Lozano, left, lead a march and protest in front of the federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests planned in the days leading up to the NATO summit. The gathering of heads of state begins this weekend.(AP Photo/Kiichiro Sato) less

Rev. Jose Landaverde, center, and Emma Lozano, left, lead a march and protest in front of the federal Immigration Court building Tuesday, May 15, 2012, in Chicago. Dozens picketed Tuesday, one of many protests ... more

A couple kiss on an escalator on the first day of the North Atlantic Treaty Organization Summit May 20, 2012 in Chicago, Illinois. Several heads of state will attend the two day NATO summit, which is expected to draw several thousand demonstrators. less

A couple kiss on an escalator on the first day of the North Atlantic Treaty Organization Summit May 20, 2012 in Chicago, Illinois. Several heads of state will attend the two day NATO summit, which is expected ... more

Photo: Joshua Lott, Getty Images

A couple kiss on an escalator on the first day of the North... Photo-2962031.43024 - Houston Chronicle